CN102659278B - Industrial wastewater treatment method during diosgenin production process - Google Patents
Industrial wastewater treatment method during diosgenin production process Download PDFInfo
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Abstract
The invention relates to an industrial wastewater treatment method during diosgenin production process. In the industrial wastewater treatment method provided by the invention, according to water quality, the wastewater produced during diosgenin production process enters a hydrolysis waste liquid pretreatment system, a hydrolysate washing wastewater treatment system, a Rhizoma Dioscoreae Zingiberensis washing wastewater treatment system or a sludge treatment system for treatment; percolate produced from the hydrolysis waste liquid pretreatment system is treated through the hydrolysate washing wastewater treatment system; sludge produced from a first-stage up-flow anaerobic sludge bed (UASB), a second-stage UASB and a coagulation settling tank of the hydrolysate washing wastewater treatment system is treated by the sludge treatment system; supernatant from the Rhizoma Dioscoreae Zingiberensis washing wastewater treatment system is returned to Rhizoma Dioscoreae Zingiberensis washing process, while the bottom sludge is dried by an acid liquid drying yard of the hydrolysis waste liquid pretreatment system and then delivered out. The method adopts different treatment processes for wastewater of different water qualities, to improve pollutant removal rate, reduce operation cost, and guarantee up-to-standard water discharge.
Description
Technical field
The invention belongs in the turmeric saponin industry, the technical field of wastewater treatment relates to processing method of industrial waste water in a kind of turmeric saponin production process.
Background technology
Along with the development of yellow ginger processing industry, the pollution of diosgenin wastewater is also serious gradually.Can produce three class waste water in the turmeric saponin production process, i.e. the waste hydrolyzed liquid and the hydrolyzate Cleaning Wastewater of yellow ginger Cleaning Wastewater, acidification hydrolization generation.Turmeric saponin wastewater has that wastewater flow rate is big, and colourity is big, the organic concentration height, and characteristics such as acidity height, salinity height belong to unmanageable waste water.
The biological treatment that present turmeric saponin factory effluent generally adopts anaerobic-aerobic to combine is aided with neutralization, physical chemistry methods such as catalyzed oxidation.But because organic concentration height, saltiness are big in the waste water, strengthened the difficulty of biochemical treatment, often be difficult to reach national specified discharge standard.And by the matter shunting, Waste Water Treatment only is not that comprehensive wastewater is handled to most enterprise wastewaters, rather than handles respectively according to different waste water.Originally more tractable yellow ginger Cleaning Wastewater and hydrolyzate Cleaning Wastewater are also become be difficult to handle, thereby increased the weight of the wastewater treatment load.Therefore, a kind of method of wastewater treatment that handle respectively according to different waste water qualities, practicable of invention has great importance.
Summary of the invention
The purpose of this invention is to provide processing method of industrial waste water in a kind of turmeric saponin production process, different waste water is handled respectively, thereby reduced the wastewater treatment load, and take into full account in the waste water supersalinity to the influence of Waste Water Treatment, solved the problem that waste water after treatment can not qualified discharge.
For solving above-mentioned technical problem, the technical scheme that the present invention takes:
Processing method of industrial waste water in a kind of turmeric saponin production process, it is characterized in that: the waste water that produces in the turmeric saponin production process enters waste hydrolyzed liquid pretreatment system or hydrolyzate Cleaning Wastewater treatment system or yellow ginger Cleaning Wastewater treatment system or sludge treating system respectively by matter and handles, and the waste hydrolyzed liquid pretreatment system is handled the percolate that produces and handled by hydrolyzate Cleaning Wastewater treatment system simultaneously; The mud that the one-level up-flow anaerobic sludge blanket of hydrolyzate Cleaning Wastewater treatment system, secondary up-flow anaerobic sludge blanket, coagulative precipitation tank produce is handled by sludge treating system; Supernatant liquor after yellow ginger Cleaning Wastewater treatment system is handled is back in the yellow ginger cleaning of turmeric saponin in producing, and bed mud is undertaken transporting outward after the mummification by the acid solution drying bed of waste hydrolyzed liquid pretreatment system.
The treatment process of above-mentioned waste hydrolyzed liquid pretreatment system:
2) waste hydrolyzed liquid that produces in the turmeric saponin production process enters waste hydrolyzed liquid storage pond, residence time 8-12 hour, with all with water quality, deposit to be full of and fill a vacancy, make the subsequent disposal unit obtain isostatic flooding quantity and stable water quality, and reach the ideal treatment effect;
2) waste liquid in the waste hydrolyzed liquid storage pond is promoted to first step waste hydrolyzed liquid reactive tank through pump, add basic agent CaO and regulate the pH value to 6-9, the waste liquid gravity flow enters second stage waste hydrolyzed liquid reactive tank, add the flocculation agent polyacrylamide, dosage is 1-3mg/L, guarantee the mud-water separation effect, reduce disengaging time, the residence time was greater than 45 minutes;
4) waste hydrolyzed liquid after the neutralization comprises that gypsum that neutralization reaction generates and lime residue enter the acid solution drying bed together and carry out mud-water separation, and dewatered sludge is regularly cleared, and percolate enters hydrolyzate Cleaning Wastewater treatment system.
The treatment process of above-mentioned hydrolyzate Cleaning Wastewater treatment system:
2) percolate of waste hydrolyzed liquid pretreatment system mixes in equalizing tank with the hydrolyzate Cleaning Wastewater, and residence time 8-12 hour, with regulating pondage, homogenizing water quality;
2) water outlet of equalizing tank is promoted to the pH regulator pond through pump, adds neutralizing agent NaOH and is neutralized to pH value 6-9;
3) water after the neutralization enters the one-level up-flow anaerobic sludge blanket and carries out anaerobic reaction, and the excess sludge of generation enters sludge treating system and handles, and overflows from overflow weir top, settling region with the treat effluent after mud separates, and enters the stripping pond;
4) in the stripping pond, feed a large amount of air, the H2S stripping that the water outlet of one-level up-flow anaerobic sludge blanket can be contained solubilised state, reduce the concentration of H2S in the water, help follow-up processing, and in the pond, add starch as secondary up-flow anaerobic sludge blanket carbon source, guarantee the clearance of secondary up-flow anaerobic sludge blanket, residence time 1-2 hour;
5) water outlet in stripping pond enters secondary up-flow anaerobic sludge blanket reaction tank and carries out the secondary anaerobic reaction, water outlet COD clearance 65%-75% through the secondary anaerobic reaction, the excess sludge that produces enters sludge treating system and handles, and water outlet enters the aerobic operation of multistage hydrolysis;
6) water outlet of secondary up-flow anaerobic sludge blanket reaction tank enters one-level Aerobic Pond, one-stage hydrolysis pool, secondary Aerobic Pond, medium sediment pool, secondary hydrolytic tank, three grades of Aerobic Ponds successively and reacts, and hydraulic detention time is 60-70 hour;
8) waste water of the aerobic operation discharge of multistage hydrolysis successively enters biogenic sediment pond and coagulative precipitation tank, waste water is in the settling tank flow process, microbial film sinks to body bottom, pond and forms mud, and clarifying water is pooled in the water leg of being located at body top, pond, final qualified discharge, the excess sludge that produces enters sludge treating system and handles, the biogenic sediment section adopts width of cloth sedimentation tank, add flocculant poly aluminum chloride accelerate precipitation in the coagulative precipitation tank, dosage 30mg/L ~ 60mg/L guarantees the precipitating phase effluent quality.
In the I and II up-flow anaerobic sludge blanket reaction tank pond internal circulation pump is arranged all in the treatment process of above-mentioned hydrolyzate Cleaning Wastewater treatment system, guarantee water inlet pipe water inlet flow velocity and up-flow anaerobic sludge blanket treatment effect, internal circulation pump guarantees that upflow velocity is not less than 0.5m/h.
The treatment process of above-mentioned yellow ginger Cleaning Wastewater treatment system:
2) the yellow ginger Cleaning Wastewater enters in the equalizing tank, residence time 3-5 hour;
2) waste water in the equalizing tank is promoted to water clarifier through pump, adds flocculation agent, carries out flocculation reaction, improves solid-liquid separation efficiency;
4) in water clarifier, residence time 2-4 hour, finish flocculation, clarification, three processes of solid-liquid separation, supernatant liquor is back to the yellow ginger matting, and the acid solution drying bed that bed mud is transported to the waste hydrolyzed liquid pretreatment system carries out transporting outward after the mummification.
Flocculation agent in the treatment process of above-mentioned yellow ginger Cleaning Wastewater treatment system adopts polyacrylamide and polymerize aluminum chloride, polyacrylamide dosage 25 mg/L-35 mg/L wherein, polymerize aluminum chloride dosage 2 mg/L-5 mg/L.
The treatment process of above-mentioned sludge treating system:
3) excess sludge of I and II up-flow anaerobic sludge blanket reaction and the excess sludge of coagulative precipitation tank are stored in the sludge sump in the hydrolyzate Cleaning Wastewater treatment system;
4) mud in the sludge sump enters the sludge conditioning jar, adds the flocculation agent polyacrylamide, and dosage is 10mg/L～20mg/L;
3) mud that added flocculation agent is sent into chamber-type press filter by the defeated dredge pump of screw rod and is carried out press filtration, the mud outward transport after the press filtration.
Compared with prior art, beneficial effect of the present invention:
(1) by the matter shunting, different waste water adopts different treating processess, improves pollutants removal rate to greatest extent and reduces running cost.
(2) sulfuric acid that contains in the turmeric saponin wastewater, pre-treatment such as process neutralization, precipitation have alleviated the toxicity to the postorder processing unit.
(3) hydrolysis reaction replenishes as the useful of biology aerobic reaction, can reduce outlet water organic substance concentration to greatest extent, guarantees that water outlet is up to standard.
(4) operation by engineering practice and existing Waste Water Treatment proves, when high concentrated organic wastewater is handled, adopts multistage hydrolysis/aerobic process effective, stable.Organic chain-scission degradation such as carbohydrate, starch and bacterial metabolism speed up, and have reduced the hard-degraded substance that microorganism self produces simultaneously.
(5) whole Waste Water Treatment is also considered mud storing factor, makes process program more perfect.
Description of drawings
Fig. 1 is sewage treatment technology process figure.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The step that the inventive method is complete:
The present invention is divided into four treatment systems: waste hydrolyzed liquid pretreatment system, hydrolyzate Cleaning Wastewater treatment system, yellow ginger Cleaning Wastewater treatment system, sludge treating system, the waste water that produces in the turmeric saponin production process enters waste hydrolyzed liquid pretreatment system or hydrolyzate Cleaning Wastewater treatment system or yellow ginger Cleaning Wastewater treatment system or sludge treating system respectively by matter and handles, and the waste hydrolyzed liquid pretreatment system is handled the percolate that produces and handled by hydrolyzate Cleaning Wastewater treatment system simultaneously; The mud that the one-level up-flow anaerobic sludge blanket of hydrolyzate Cleaning Wastewater treatment system, secondary up-flow anaerobic sludge blanket, coagulative precipitation tank produce is handled by sludge treating system; Supernatant liquor after yellow ginger Cleaning Wastewater treatment system is handled is back in the yellow ginger cleaning of turmeric saponin in producing, and bed mud is undertaken transporting outward after the mummification by the acid solution drying bed of waste hydrolyzed liquid pretreatment system.
(1) waste hydrolyzed liquid pretreatment system
1) waste hydrolyzed liquid that produces in the turmeric saponin production process enters waste hydrolyzed liquid storage pond, residence time 8-12 hour, with all with water quality, deposit to be full of and fill a vacancy, make the subsequent disposal unit obtain isostatic flooding quantity and stable water quality, and reach the ideal treatment effect.The waste hydrolyzed liquid water yield is 70-90 part/sky, and COD is 80-100g/L, pH value 0.08-0.1.
) waste liquid in the waste hydrolyzed liquid storage pond is promoted to first step waste hydrolyzed liquid reactive tank through pump, adds basic agent CaO, adjusting pH value is to 6-9.The dosage of CaO is controlled by online pH meter.The waste liquid gravity flow enters second stage waste hydrolyzed liquid reactive tank, adds flocculation agent PAM, and dosage is 1-3mg/L, guarantees the mud-water separation effect, reduces disengaging time.The residence time was greater than 45 minutes.Be equipped with whipping appts in the reactive tank, accelerated reaction.
) waste hydrolyzed liquid after the neutralization comprises that gypsum that neutralization reaction generates and lime residue enter the acid solution drying bed together and carry out mud-water separation, dewatered sludge is regularly cleared, and percolate enters the subsequent disposal system.
(2) hydrolyzate Cleaning Wastewater treatment system
1) percolate of waste hydrolyzed liquid pretreatment system mixes in equalizing tank with the hydrolyzate Cleaning Wastewater, and residence time 8-12 hour, with regulating pondage, homogenizing water quality.The hydrolyzate Cleaning Wastewater water yield is 400-500 part/sky, and COD is 4.5-6g/L, and the pH value is 0.8-1.2.
) water outlet of equalizing tank is promoted to the pH regulator pond through pump, adds neutralizing agent NaOH and is neutralized to pH value 6-9, the dosage of NaOH is controlled by online pH meter.
) water after the neutralization enters one-level up-flow anaerobic sludge blanket (up-flow anaerobic sludge blanket) and carry out anaerobic reaction, the excess sludge that produces enters the biochemical sludge treatment system and handles, overflow from overflow weir top, settling region with the treat effluent after mud separates, enter the stripping pond.
) in the stripping pond, feed a large amount of air, the water outlet of one-level up-flow anaerobic sludge blanket can be contained the H2S stripping of solubilised state, reduce the concentration of H2S in the water, help follow-up processing.And in the pond, add starch as secondary up-flow anaerobic sludge blanket carbon source, guarantee the clearance of secondary up-flow anaerobic sludge blanket.Residence time 1-2 hour.
) water outlet in stripping pond enters secondary up-flow anaerobic sludge blanket reaction tank and carry out the secondary anaerobic reaction, water outlet COD clearance 65%-75% through the secondary anaerobic reaction, the excess sludge that produces enters the biochemical sludge treatment system and handles, and water outlet enters the aerobic operation of multistage hydrolysis.I and II up-flow anaerobic sludge blanket reaction tank all has internal circulation pump in the pond, guarantees water inlet pipe water inlet flow velocity and up-flow anaerobic sludge blanket treatment effect.Internal circulation pump guarantees that upflow velocity is not less than 0.5m/h.
) the multistage hydrolysis is aerobic is made up of two hydrolysis reaction and the reaction of three aerobic bio-contact oxidations.Hydrolytic bacteria and aerobic bacteria are two kinds of dissimilar microorganisms, and multistage hydrolysis aerobic process utilizes this two quasi-microorganisms alternation response just, reduce the COD in the waste water.
At hydrolysis stage, solid matter is degraded to dissolved matter, and macromolecular substance is degraded to small-molecule substance, is lipid acid in the souring stage carbohydrate degradation, and the major microorganisms in this stage is hydrolysis bacterium, acid-producing bacteria.
It is a kind of providing under the prerequisite of free oxygen that the aerobe of waste water is handled, and based on aerobic microbiological, makes organic matter degradation, stable method for innocent treatment.The aerobe of waste water is handled and is adopted contact oxidation technology.Contact oxidation technology is to hang biologic packing material in handling structures, makes biofilm development, attached on these fillers, increases the biomass of biological treatment system whereby, strengthens the biodegradability of organic pollutant in the sewage.
The water outlet of secondary up-flow anaerobic sludge blanket reaction tank enters one-level Aerobic Pond, one-stage hydrolysis pool, secondary Aerobic Pond, medium sediment pool, secondary hydrolytic tank, three grades of Aerobic Ponds successively and reacts.Hydraulic detention time is 60-70 hour.
Aerobic Pond porous aeration, hydrolytic tank is installed mechanical stirring device.Assembly filler in each pond, and from medium sediment pool to each pond returned sluge, guarantee each pond sludge concentration.Consider one-level Aerobic Pond influent concentration height, the characteristics of easy to be filmed not, the one-level Aerobic Pond adopts conventional activated sludge process.
) contain the microbial film that is not dissolved in water that comes off in a large number in the aerobic operation of the multistage hydrolysis waste water of discharging, if these materials can not effectively separate, will influence system's effluent quality from water.Waste water successively enters biogenic sediment pond and coagulative precipitation tank, and waste water is in the settling tank flow process, and microbial film sinks to body bottom, pond and forms mud, and clarifying water is pooled in the water leg of being located at body top, pond, final qualified discharge.The excess sludge that produces enters the biochemical sludge treatment system and handles.The biogenic sediment section adopts width of cloth sedimentation tank, adds the PAC accelerate precipitation in the coagulative precipitation tank, and dosage 30mg/L ~ 60mg/L guarantees the precipitating phase effluent quality.Can reach 92%-98% through water outlet COD clearance behind the biogenic sediment, again through water outlet COD clearance behind the coagulating sedimentation can reach 99% and more than.
(3) yellow ginger Cleaning Wastewater treatment system
1) the yellow ginger Cleaning Wastewater enters in the equalizing tank, residence time 3-5 hour.The equalizing tank effect has two, one, regulating pondage, and the 2nd, regulate water quality, for stable operational conditions is created in subsequent operations.The yellow ginger Cleaning Wastewater water yield is 200-300 part/sky, and COD is 0.4-0.7g/L, and pH value 6-8, SS are 800-1000 mg/L.
) waste water in the equalizing tank is promoted to water clarifier through pump, adds PAC and PAM, carries out flocculation reaction, improves solid-liquid separation efficiency.PAC dosage 25 mg/L-35 mg/L, PAM dosage 2 mg/L-5 mg/L.
) in water clarifier, residence time 2-4 hour, finish flocculation, clarification, three processes of solid-liquid separation.Supernatant liquor is back to the yellow ginger matting, and the acid solution drying bed that bed mud is transported to the waste hydrolyzed liquid pretreatment system carries out transporting outward after the mummification.
(4) sludge treating system
1) excess sludge of I and II up-flow anaerobic sludge blanket reaction and the excess sludge of coagulating sedimentation are stored in the sludge sump in the hydrolyzate Cleaning Wastewater treatment system.
) mud in the sludge sump enters the sludge conditioning jar, adds flocculation agent nonionic PAM, dosage is 10mg/L～20mg/L.
) mud that added flocculation agent sends into chamber-type press filter by the defeated dredge pump of screw rod and carry out press filtration, the mud outward transport after the press filtration.
Embodiment:
(1) waste hydrolyzed liquid pretreatment system
1) waste hydrolyzed liquid that produces in the turmeric saponin production process enters waste hydrolyzed liquid storage pond, and 10 hours residence time, the waste hydrolyzed liquid water yield is 80 tons/day, and COD is 91g/L, pH value 0.1.
) waste water in the waste hydrolyzed liquid storage pond is promoted to first step waste hydrolyzed liquid reactive tank through pump, adding neutralizing agent CaO, to be neutralized to the pH value be 7, enters second stage waste hydrolyzed liquid reactive tank then, adds flocculation agent PAM, dosage is 2mg/L, 50 minutes residence time.Be equipped with whipping appts in the reactive tank, accelerated reaction.
) waste hydrolyzed liquid after the neutralization comprises that gypsum that neutralization reaction generates and lime residue enter the acid solution drying bed together and carry out mud-water separation, dewatered sludge is regularly cleared, and percolate enters the subsequent disposal system.
(2) hydrolyzate Cleaning Wastewater treatment system
1) percolate of waste hydrolyzed liquid pretreatment system mixes in equalizing tank with the hydrolyzate Cleaning Wastewater, and 10 hours residence time, the hydrolyzate Cleaning Wastewater water yield is 450 tons/day, and COD is 5.3g/L, and the pH value is 1.
) water outlet of equalizing tank is promoted to the pH regulator pond through pump, adds neutralizing agent NaOH and is neutralized to pH value 7, the dosage of NaOH is controlled by online pH meter.
) water after the neutralization enters one-level up-flow anaerobic sludge blanket (up-flow anaerobic sludge blanket) and carry out anaerobic reaction, the excess sludge that produces enters the biochemical sludge treatment system and handles, overflow from overflow weir top, settling region with the treat effluent after mud separates, enter the stripping pond.
) in the stripping pond, feed a large amount of air, the water outlet of one-level up-flow anaerobic sludge blanket can be contained the H2S stripping of solubilised state, reduce the concentration of H2S in the water, help follow-up processing.And in the pond, add starch as secondary up-flow anaerobic sludge blanket carbon source, guarantee the clearance of secondary up-flow anaerobic sludge blanket.1.5 hours residence time.
) water outlet in stripping pond enters secondary up-flow anaerobic sludge blanket reaction tank and carry out the secondary anaerobic reaction, water outlet COD clearance 70% through the secondary anaerobic reaction, the excess sludge that produces enters the biochemical sludge treatment system and handles, and water outlet enters the aerobic operation of multistage hydrolysis.I and II up-flow anaerobic sludge blanket reaction tank all has internal circulation pump in the pond, guarantees water inlet pipe water inlet flow velocity and up-flow anaerobic sludge blanket treatment effect.Internal circulation pump upflow velocity 0.6m/h.
) water outlet of secondary up-flow anaerobic sludge blanket reaction tank enters one-level Aerobic Pond, one-stage hydrolysis pool, secondary Aerobic Pond, medium sediment pool, secondary hydrolytic tank, three grades of Aerobic Ponds successively and react.Hydraulic detention time is 65 hours.Aerobic Pond porous aeration, hydrolytic tank is installed mechanical stirring device.Assembly filler in each pond, and from medium sediment pool to each pond returned sluge, guarantee each pond sludge concentration.
) the aerobic operation of the multistage hydrolysis waste water of discharging successively enters biogenic sediment pond and coagulative precipitation tank, waste water is in the settling tank flow process, microbial film sinks to body bottom, pond and forms mud, and clarifying water is pooled in the water leg of being located at body top, pond, final qualified discharge.The excess sludge that produces enters the biochemical sludge treatment system and handles.Add the PAC accelerate precipitation in the coagulative precipitation tank, dosage 50mg/L guarantees the precipitating phase effluent quality.Can reach 97% through water outlet COD clearance behind the biogenic sediment, can reach 99% through water outlet COD clearance behind the coagulating sedimentation again, COD concentration is 186mg/L in the water at this moment, but qualified discharge.
(3) yellow ginger Cleaning Wastewater treatment system
1) the yellow ginger Cleaning Wastewater enters in the equalizing tank, 3.5 hours residence time.The yellow ginger Cleaning Wastewater water yield is 240 tons/day, and COD is 0.5g/L, pH value 7, and SS is 892 mg/L.
) waste water in the equalizing tank is promoted to water clarifier through pump, adds PAC and PAM, carries out flocculation reaction, improves solid-liquid separation efficiency.PAC dosage 30 mg/L, PAM dosage 3 mg/L.
) in water clarifier, 2.5 hours residence time, finish flocculation, clarification, three processes of solid-liquid separation.Supernatant liquor is back to the yellow ginger matting, and the acid solution drying bed that bed mud is transported to the waste hydrolyzed liquid pretreatment system carries out transporting outward after the mummification.
(4) sludge treating system
1) excess sludge of I and II up-flow anaerobic sludge blanket reaction and the excess sludge of coagulating sedimentation are stored in the sludge sump in the hydrolyzate Cleaning Wastewater treatment system.
) mud in the sludge sump enters the sludge conditioning jar, adds flocculation agent nonionic PAM, dosage is 10mg/L.
) mud that added flocculation agent sends into chamber-type press filter by the defeated dredge pump of screw rod and carry out press filtration, the mud outward transport after the press filtration.
Claims (7)
1. processing method of industrial waste water in the turmeric saponin production process, it is characterized in that: the waste water that produces in the turmeric saponin production process enters waste hydrolyzed liquid pretreatment system or hydrolyzate Cleaning Wastewater treatment system or yellow ginger Cleaning Wastewater treatment system or sludge treating system respectively by matter and handles, and the waste hydrolyzed liquid pretreatment system is handled the percolate that produces and handled by hydrolyzate Cleaning Wastewater treatment system simultaneously; The mud that the one-level up-flow anaerobic sludge blanket of hydrolyzate Cleaning Wastewater treatment system, secondary up-flow anaerobic sludge blanket, coagulative precipitation tank produce is handled by sludge treating system; Supernatant liquor after yellow ginger Cleaning Wastewater treatment system is handled is back in the yellow ginger cleaning of turmeric saponin in producing, and bed mud is undertaken transporting outward after the mummification by the acid solution drying bed of waste hydrolyzed liquid pretreatment system.
2. processing method of industrial waste water in a kind of turmeric saponin production process according to claim 1 is characterized in that: the treatment process of described waste hydrolyzed liquid pretreatment system:
1) waste hydrolyzed liquid that produces in the turmeric saponin production process enters waste hydrolyzed liquid storage pond, residence time 8-12 hour, with all with water quality, deposit to be full of and fill a vacancy, make the subsequent disposal unit obtain isostatic flooding quantity and stable water quality, and reach the ideal treatment effect;
2) waste liquid in the waste hydrolyzed liquid storage pond is promoted to first step waste hydrolyzed liquid reactive tank through pump, add basic agent CaO and regulate the pH value to 6-9, the waste liquid gravity flow enters second stage waste hydrolyzed liquid reactive tank, add the flocculation agent polyacrylamide, dosage is 1-3mg/L, guarantee the mud-water separation effect, reduce disengaging time, the residence time was greater than 45 minutes;
3) waste hydrolyzed liquid after the neutralization comprises that gypsum that neutralization reaction generates and lime residue enter the acid solution drying bed together and carry out mud-water separation, and dewatered sludge is regularly cleared, and percolate enters hydrolyzate Cleaning Wastewater treatment system.
3. processing method of industrial waste water in a kind of turmeric saponin production process according to claim 1 is characterized in that: the treatment process of described hydrolyzate Cleaning Wastewater treatment system:
1) percolate of waste hydrolyzed liquid pretreatment system mixes in equalizing tank with the hydrolyzate Cleaning Wastewater, and residence time 8-12 hour, with regulating pondage, homogenizing water quality;
2) water outlet of equalizing tank is promoted to the pH regulator pond through pump, adds neutralizing agent NaOH and is neutralized to pH value 6-9;
3) water after the neutralization enters the one-level up-flow anaerobic sludge blanket and carries out anaerobic reaction, and the excess sludge of generation enters sludge treating system and handles, and overflows from overflow weir top, settling region with the treat effluent after mud separates, and enters the stripping pond;
4) in the stripping pond, feed a large amount of air, the water outlet of one-level up-flow anaerobic sludge blanket is contained the H of solubilised state
2The S stripping reduces H in the water
2The concentration of S helps follow-up processing, and adds starch as secondary up-flow anaerobic sludge blanket carbon source in the pond, guarantees the clearance of secondary up-flow anaerobic sludge blanket, residence time 1-2 hour;
5) water outlet in stripping pond enters secondary up-flow anaerobic sludge blanket reaction tank and carries out the secondary anaerobic reaction, water outlet COD clearance 65%-75% through the secondary anaerobic reaction, the excess sludge that produces enters sludge treating system and handles, and water outlet enters the aerobic operation of multistage hydrolysis;
6) water outlet of secondary up-flow anaerobic sludge blanket reaction tank enters one-level Aerobic Pond, one-stage hydrolysis pool, secondary Aerobic Pond, medium sediment pool, secondary hydrolytic tank, three grades of Aerobic Ponds successively and reacts, and hydraulic detention time is 60-70 hour;
7) waste water of the aerobic operation discharge of multistage hydrolysis successively enters biogenic sediment pond and coagulative precipitation tank, waste water is in the settling tank flow process, microbial film sinks to body bottom, pond and forms mud, and clarifying water is pooled in the water leg of being located at body top, pond, final qualified discharge, the excess sludge that produces enters sludge treating system and handles, the biogenic sediment section adopts width of cloth sedimentation tank, add flocculant poly aluminum chloride accelerate precipitation in the coagulative precipitation tank, dosage 30mg/L ~ 60mg/L guarantees the precipitating phase effluent quality.
4. processing method of industrial waste water in a kind of turmeric saponin production process according to claim 3, it is characterized in that: in the I and II up-flow anaerobic sludge blanket reaction tank pond internal circulation pump is arranged all in the treatment process of described hydrolyzate Cleaning Wastewater treatment system, guarantee water inlet pipe water inlet flow velocity and up-flow anaerobic sludge blanket treatment effect, internal circulation pump guarantees that upflow velocity is not less than 0.5m/h.
5. processing method of industrial waste water in a kind of turmeric saponin production process according to claim 1 is characterized in that: the treatment process of described yellow ginger Cleaning Wastewater treatment system:
1) the yellow ginger Cleaning Wastewater enters in the equalizing tank, residence time 3-5 hour;
2) waste water in the equalizing tank is promoted to water clarifier through pump, adds flocculation agent, carries out flocculation reaction, improves solid-liquid separation efficiency;
3) in water clarifier, residence time 2-4 hour, finish flocculation, clarification, three processes of solid-liquid separation, supernatant liquor is back to the yellow ginger matting, and the acid solution drying bed that bed mud is transported to the waste hydrolyzed liquid pretreatment system carries out transporting outward after the mummification.
6. processing method of industrial waste water in a kind of turmeric saponin production process according to claim 5, it is characterized in that: the flocculation agent in the treatment process of described yellow ginger Cleaning Wastewater treatment system adopts polyacrylamide and polymerize aluminum chloride, polyacrylamide dosage 25 mg/L-35 mg/L wherein, polymerize aluminum chloride dosage 2 mg/L-5 mg/L.
7. processing method of industrial waste water in a kind of turmeric saponin production process according to claim 1 is characterized in that: the treatment process of described sludge treating system:
1) excess sludge of I and II up-flow anaerobic sludge blanket reaction and the excess sludge of coagulative precipitation tank are stored in the sludge sump in the hydrolyzate Cleaning Wastewater treatment system;
2) mud in the sludge sump enters the sludge conditioning jar, adds the flocculation agent polyacrylamide, and dosage is 10mg/L～20mg/L;
3) mud that added flocculation agent is sent into chamber-type press filter by the defeated dredge pump of screw rod and is carried out press filtration, the mud outward transport after the press filtration.
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| CN108033617A (en) * | 2017-11-29 | 2018-05-15 | 石药集团内蒙古中诺药业有限公司 | A kind of technique for realizing 7-ACA production wastewater zero discharges |
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| CN110734199A (en) * | 2019-11-18 | 2020-01-31 | 青岛联盛益康食品科技有限公司 | garlic processing wastewater treatment process |
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